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-   -   What does RT mean on a pcb (https://www.diybanter.com/electronics-repair/194622-what-does-rt-mean-pcb.html)

rupert March 10th 07 10:21 AM

What does RT mean on a pcb
 
hi i am a self taught repairer of basic electronic items and have been
doing it for about 4 years, as i buy faulty items repair them then
sell them on but i have a batch of about 25 PVRs i have repaired about
20 of them but there is one part on the last 4 that i need and cant
identify

It is on the power supply board

it is labelled RT1 and looks alot like a small capacitor

it has the marking 8S100L on it

it is one of the early components on the board (next after the fuse-
F1))

please help as i have repured the rest of the board but am sure that i
need to replace this aswell as it is showing scorch marks


James Sweet March 10th 07 11:49 AM

What does RT mean on a pcb
 
rupert wrote:
hi i am a self taught repairer of basic electronic items and have been
doing it for about 4 years, as i buy faulty items repair them then
sell them on but i have a batch of about 25 PVRs i have repaired about
20 of them but there is one part on the last 4 that i need and cant
identify

It is on the power supply board

it is labelled RT1 and looks alot like a small capacitor

it has the marking 8S100L on it

it is one of the early components on the board (next after the fuse-
F1))

please help as i have repured the rest of the board but am sure that i
need to replace this aswell as it is showing scorch marks



Probably a MOV for surge protection.

Eeyore March 10th 07 12:15 PM

What does RT mean on a pcb
 


rupert wrote:

hi i am a self taught repairer of basic electronic items and have been
doing it for about 4 years, as i buy faulty items repair them then
sell them on but i have a batch of about 25 PVRs i have repaired about
20 of them but there is one part on the last 4 that i need and cant
identify

It is on the power supply board

it is labelled RT1 and looks alot like a small capacitor

it has the marking 8S100L on it

it is one of the early components on the board (next after the fuse-
F1))

please help as i have repured the rest of the board but am sure that i
need to replace this aswell as it is showing scorch marks


It's a 'surgeguard' style NTC thermistor. Have you measured them ? They can run
quite hot btw.

Graham



Eeyore March 10th 07 12:16 PM

What does RT mean on a pcb
 


James Sweet wrote:

rupert wrote:
hi i am a self taught repairer of basic electronic items and have been
doing it for about 4 years, as i buy faulty items repair them then
sell them on but i have a batch of about 25 PVRs i have repaired about
20 of them but there is one part on the last 4 that i need and cant
identify

It is on the power supply board

it is labelled RT1 and looks alot like a small capacitor

it has the marking 8S100L on it

it is one of the early components on the board (next after the fuse-
F1))

please help as i have repured the rest of the board but am sure that i
need to replace this aswell as it is showing scorch marks



Probably a MOV for surge protection.


They look similar to NTCs too. The MOV will be 'across the line' where an NTC
will be in series.

Graham



rupert March 10th 07 08:50 PM

What does RT mean on a pcb
 
On Mar 10, 12:16 pm, Eeyore
wrote:
James Sweet wrote:
rupert wrote:
hi i am a self taught repairer of basic electronic items and have been
doing it for about 4 years, as i buy faulty items repair them then
sell them on but i have a batch of about 25 PVRs i have repaired about
20 of them but there is one part on the last 4 that i need and cant
identify


It is on the power supply board


it is labelled RT1 and looks alot like a small capacitor


it has the marking 8S100L on it


it is one of the early components on the board (next after the fuse-
F1))


please help as i have repured the rest of the board but am sure that i
need to replace this aswell as it is showing scorch marks


Probably a MOV for surge protection.


They look similar to NTCs too. The MOV will be 'across the line' where an NTC
will be in series.

Graham- Hide quoted text -

- Show quoted text -




hi THANKS ALOT its an NTC then but how do i find the value of the one
i need


Ross Herbert March 11th 07 03:38 AM

What does RT mean on a pcb
 
On 10 Mar 2007 02:21:14 -0800, "rupert" wrote:

hi i am a self taught repairer of basic electronic items and have

been
doing it for about 4 years, as i buy faulty items repair them then
sell them on but i have a batch of about 25 PVRs i have repaired

about
20 of them but there is one part on the last 4 that i need and cant
identify

It is on the power supply board

it is labelled RT1 and looks alot like a small capacitor

it has the marking 8S100L on it

it is one of the early components on the board (next after the fuse-
F1))

please help as i have repured the rest of the board but am sure that

i
need to replace this aswell as it is showing scorch marks



Highly likely that RT means Resistor - Temperature (dependant).

It will be a NTC inrush current suppressor.. Since the unit is not
likely to be using more than a couple of 10's of watts at most you
could use one such as this

http://www.ametherm.com/Data%20Sheets/SL08%2010001.pdf

Eeyore March 11th 07 06:39 AM

What does RT mean on a pcb
 


rupert wrote:

Eeyore wrote:
James Sweet wrote:
rupert wrote:
hi i am a self taught repairer of basic electronic items and have been
doing it for about 4 years, as i buy faulty items repair them then
sell them on but i have a batch of about 25 PVRs i have repaired about
20 of them but there is one part on the last 4 that i need and cant
identify


It is on the power supply board


it is labelled RT1 and looks alot like a small capacitor


it has the marking 8S100L on it


it is one of the early components on the board (next after the fuse-
F1))


please help as i have repured the rest of the board but am sure that i
need to replace this aswell as it is showing scorch marks


Probably a MOV for surge protection.


They look similar to NTCs too. The MOV will be 'across the line' where an NTC
will be in series.



hi THANKS ALOT its an NTC then but how do i find the value of the one
i need


Measure a good one ?

They're specced by surge capability (related to size) and hot and cold resistance.
You should be able to find a suitable replacement from that.

Graham



rupert March 11th 07 11:03 AM

What does RT mean on a pcb
 
On Mar 11, 6:39 am, Eeyore
wrote:
rupert wrote:
Eeyore wrote:
James Sweet wrote:
rupert wrote:
hi i am a self taught repairer of basic electronic items and have been
doing it for about 4 years, as i buy faulty items repair them then
sell them on but i have a batch of about 25 PVRs i have repaired about
20 of them but there is one part on the last 4 that i need and cant
identify


It is on the power supply board


it is labelled RT1 and looks alot like a small capacitor


it has the marking 8S100L on it


it is one of the early components on the board (next after the fuse-
F1))


please help as i have repured the rest of the board but am sure that i
need to replace this aswell as it is showing scorch marks


Probably a MOV for surge protection.


They look similar to NTCs too. The MOV will be 'across the line' where an NTC
will be in series.


hi THANKS ALOT its an NTC then but how do i find the value of the one
i need


Measure a good one ?

They're specced by surge capability (related to size) and hot and cold resistance.
You should be able to find a suitable replacement from that.

Graham- Hide quoted text -

- Show quoted text -


THANKS FOR YOUR REPLIES I GET SOME ON ORDER!!!


[email protected] March 11th 07 12:38 PM

What does RT mean on a pcb
 
On Sun, 11 Mar 2007 03:38:29 GMT, Ross Herbert
wrote:

On 10 Mar 2007 02:21:14 -0800, "rupert" wrote:

hi i am a self taught repairer of basic electronic items and have

been
doing it for about 4 years, as i buy faulty items repair them then
sell them on but i have a batch of about 25 PVRs i have repaired

about
20 of them but there is one part on the last 4 that i need and cant
identify

It is on the power supply board

it is labelled RT1 and looks alot like a small capacitor

it has the marking 8S100L on it

it is one of the early components on the board (next after the fuse-
F1))

please help as i have repured the rest of the board but am sure that

i
need to replace this aswell as it is showing scorch marks



Highly likely that RT means Resistor - Temperature (dependant).

It will be a NTC inrush current suppressor.. Since the unit is not
likely to be using more than a couple of 10's of watts at most you
could use one such as this

http://www.ametherm.com/Data%20Sheets/SL08%2010001.pdf


Could this device (or similar) be put in series with my halogen puck
lights that keep blowing bulbs - and would it help?

Eeyore March 11th 07 03:03 PM

What does RT mean on a pcb
 


wrote:

Ross Herbert wrote:

It will be a NTC inrush current suppressor.. Since the unit is not
likely to be using more than a couple of 10's of watts at most you
could use one such as this

http://www.ametherm.com/Data%20Sheets/SL08%2010001.pdf

Could this device (or similar) be put in series with my halogen puck
lights that keep blowing bulbs


Yes it could.

- and would it help?


It might do. It will certainly reduce the inrush.

Graham



Ross Herbert March 12th 07 06:32 AM

What does RT mean on a pcb
 
On Sun, 11 Mar 2007 12:38:47 GMT, wrote:

On Sun, 11 Mar 2007 03:38:29 GMT, Ross Herbert
wrote:

On 10 Mar 2007 02:21:14 -0800, "rupert" wrote:

hi i am a self taught repairer of basic electronic items and have

been
doing it for about 4 years, as i buy faulty items repair them then
sell them on but i have a batch of about 25 PVRs i have repaired

about
20 of them but there is one part on the last 4 that i need and

cant
identify

It is on the power supply board

it is labelled RT1 and looks alot like a small capacitor

it has the marking 8S100L on it

it is one of the early components on the board (next after the

fuse-
F1))

please help as i have repured the rest of the board but am sure

that
i
need to replace this aswell as it is showing scorch marks



Highly likely that RT means Resistor - Temperature (dependant).

It will be a NTC inrush current suppressor.. Since the unit is not
likely to be using more than a couple of 10's of watts at most you
could use one such as this

http://www.ametherm.com/Data%20Sheets/SL08%2010001.pdf

Could this device (or similar) be put in series with my halogen puck
lights that keep blowing bulbs - and would it help?



Could you please explain what a "puck light" is?

I am familiar with the standard halogen downlights operating from ac
mains supply via a transformer but not knowing the specifics of your
particular halogen I couldn't say whether the NTC would help.

Usual Suspect March 12th 07 03:23 PM

What does RT mean on a pcb
 
it is labelled RT1 and looks alot like a small capacitor

Is it a microprocessor PCB? Does it say "RTS"?

"Return to sender, address unknown".

But that's just a guess...
--
Al, the "king"


James Sweet March 13th 07 02:39 AM

What does RT mean on a pcb
 


Could you please explain what a "puck light" is?

I am familiar with the standard halogen downlights operating from ac
mains supply via a transformer but not knowing the specifics of your
particular halogen I couldn't say whether the NTC would help.


I would guess he means the hockey puck shaped halogen fixtures meant for
mounting under kitchen cabinets.

Jim Land March 13th 07 03:07 AM

What does RT mean on a pcb
 
wrote in
:

my halogen puck
lights that keep blowing bulbs


When that happens, start by taking an accurate voltmeter and measuring the
AC voltage on the lamps. If it's too high, of course they will keep
blowing.

What about other light bulbs? Do they keep blowing too? What is the
voltage at an outlet?


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